1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
|
//
// Copyright (c) Microsoft. All rights reserved.
// Licensed under the MIT license. See LICENSE file in the project root for full license information.
//
// ==++==
//
//
// ==--==
/****************************************************************************
* STRIKE.C *
* Routines for the NTSD extension - STRIKE *
* *
* History: *
* 09/07/99 Microsoft Created *
* *
* *
\***************************************************************************/
#include <windows.h>
#include <winternl.h>
#include <winver.h>
#include <wchar.h>
#define NOEXTAPI
#define KDEXT_64BIT
#include <wdbgexts.h>
#undef DECLARE_API
#undef StackTrace
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stddef.h>
// We need to define the target address type. This will be used in the
// functions that read directly from the debuggee address space, vs. using
// the DAC tgo read the DAC-ized data structures.
#include "daccess.h"
//#include "dbgeng.h"
#include "strike.h"
#ifndef STRESS_LOG
#define STRESS_LOG
#endif // STRESS_LOG
#define STRESS_LOG_READONLY
#include "stresslog.h"
#include <dbghelp.h>
#include "corhdr.h"
#include "dacprivate.h"
#define CORHANDLE_MASK 0x1
#define DEFINE_EXT_GLOBALS
#include "util.h"
#ifndef _ASSERTE
#ifdef _DEBUG
#define _ASSERTE(expr) \
do { if (!(expr) ) { ExtOut(#expr); DebugBreak(); } } while (0)
#else // _DEBUG
#define _ASSERTE(expr)
#endif // _DEBUG else
#endif // !_ASSERTE
#ifdef _MSC_VER
#pragma warning(disable:4244) // conversion from 'unsigned int' to 'unsigned short', possible loss of data
#pragma warning(disable:4189) // local variable is initialized but not referenced
#endif // _MSC_VER
struct PlugRecord
{
PlugRecord *next;
size_t PlugStart;
size_t PlugEnd;
size_t Delta;
PlugRecord() { ZeroMemory(this,sizeof(PlugRecord)); }
};
struct PromoteRecord
{
PromoteRecord *next;
size_t Root;
size_t Value;
size_t methodTable;
PromoteRecord() { ZeroMemory(this,sizeof(PromoteRecord)); }
};
struct RelocRecord
{
RelocRecord *next;
size_t Root;
size_t PrevValue;
size_t NewValue;
size_t methodTable;
RelocRecord() { ZeroMemory(this,sizeof(RelocRecord)); }
};
struct GCRecord
{
ULONG64 GCCount;
// BOOL IsComplete() { return bFinished && bHaveStart; }
PlugRecord *PlugList;
RelocRecord *RelocList;
PromoteRecord *PromoteList;
void AddPlug(PlugRecord& p) {
PlugRecord *pTmp = PlugList;
PlugList = new PlugRecord(p);
PlugList->next = pTmp;
}
void AddReloc(RelocRecord& r) {
RelocRecord *pTmp = RelocList;
RelocList = new RelocRecord(r);
RelocList->next = pTmp;
}
void AddPromote(PromoteRecord& r) {
PromoteRecord *pTmp = PromoteList;
PromoteList = new PromoteRecord(r);
PromoteList->next = pTmp;
}
UINT PlugCount() {
UINT ret = 0;
PlugRecord *Iter = PlugList;
while (Iter) {
Iter = Iter->next;
ret++;
}
return ret;
}
UINT RelocCount() {
UINT ret = 0;
RelocRecord *Iter = RelocList;
while (Iter) {
Iter = Iter->next;
ret++;
}
return ret;
}
UINT PromoteCount() {
UINT ret = 0;
PromoteRecord *Iter = PromoteList;
while (Iter) {
Iter = Iter->next;
ret++;
}
return ret;
}
void Clear() {
PlugRecord *pTrav = PlugList;
while (pTrav) {
PlugRecord *pTmp = pTrav->next;
delete pTrav;
pTrav = pTmp;
}
RelocRecord *pTravR = RelocList;
while (pTravR) {
RelocRecord *pTmp = pTravR->next;
delete pTravR;
pTravR = pTmp;
}
PromoteRecord *pTravP = PromoteList;
while (pTravP) {
PromoteRecord *pTmp = pTravP->next;
delete pTravP;
pTravP = pTmp;
}
ZeroMemory(this,sizeof(GCRecord));
}
};
#define MAX_GCRECORDS 500
UINT g_recordCount = 0;
GCRecord g_records[MAX_GCRECORDS];
void GcHistClear()
{
for (UINT i=0; i < g_recordCount; i++)
{
g_records[i].Clear();
}
g_recordCount = 0;
}
void GcHistAddLog(LPCSTR msg, StressMsg* stressMsg)
{
if (g_recordCount >= MAX_GCRECORDS)
{
return;
}
if (strcmp(msg, ThreadStressLog::gcPlugMoveMsg()) == 0)
{
PlugRecord pr;
// this is a plug message
_ASSERTE(stressMsg->numberOfArgs == 3);
pr.PlugStart = (size_t) stressMsg->args[0];
pr.PlugEnd = (size_t) stressMsg->args[1];
pr.Delta = (size_t) stressMsg->args[2];
g_records[g_recordCount].AddPlug(pr);
}
else if (strcmp(msg, ThreadStressLog::gcRootMsg()) == 0)
{
// this is a root message
_ASSERTE(stressMsg->numberOfArgs == 4);
RelocRecord rr;
rr.Root = (size_t) stressMsg->args[0];
rr.PrevValue = (size_t) stressMsg->args[1];
rr.NewValue = (size_t) stressMsg->args[2];
rr.methodTable = (size_t) stressMsg->args[3];
g_records[g_recordCount].AddReloc(rr);
}
else if (strcmp(msg, ThreadStressLog::gcRootPromoteMsg()) == 0)
{
// this is a promote message
_ASSERTE(stressMsg->numberOfArgs == 3);
PromoteRecord pr;
pr.Root = (size_t) stressMsg->args[0];
pr.Value = (size_t) stressMsg->args[1];
pr.methodTable = (size_t) stressMsg->args[2];
g_records[g_recordCount].AddPromote(pr);
}
else if (strcmp(msg, ThreadStressLog::gcStartMsg()) == 0)
{
// Gc start!
_ASSERTE(stressMsg->numberOfArgs == 3);
ULONG64 gc_count = (ULONG64) stressMsg->args[0];
g_records[g_recordCount].GCCount = gc_count;
g_recordCount++;
}
else if (strcmp(msg, ThreadStressLog::gcEndMsg()) == 0)
{
// Gc end!
// ULONG64 gc_count = (ULONG64) stressMsg->data;
// ExtOut ("ENDGC %d\n", gc_count);
}
}
DECLARE_API(HistStats)
{
INIT_API();
ExtOut ("%8s %8s %8s\n",
"GCCount", "Promotes", "Relocs");
ExtOut ("-----------------------------------\n");
// Just traverse the data structure, printing basic stats
for (UINT i=0; i < g_recordCount; i++)
{
UINT PromoteCount = g_records[i].PromoteCount();
UINT RelocCount = g_records[i].RelocCount();
UINT GCCount = (UINT) g_records[i].GCCount;
ExtOut ("%8d %8d %8d\n",
GCCount,
PromoteCount,
RelocCount);
}
BOOL bErrorFound = FALSE;
// Check for duplicate Reloc or Promote messages within one gc.
// Method is very inefficient, improve it later.
for (UINT i=0; i < g_recordCount; i++)
{
{ // Promotes
PromoteRecord *Iter = g_records[i].PromoteList;
UINT GCCount = (UINT) g_records[i].GCCount;
while (Iter)
{
PromoteRecord *innerIter = Iter->next;
while (innerIter)
{
if (Iter->Root == innerIter->Root)
{
ExtOut ("Root %p promoted multiple times in gc %d\n",
(ULONG64) Iter->Root,
GCCount);
bErrorFound = TRUE;
}
innerIter = innerIter->next;
}
Iter = Iter->next;
}
}
{ // Relocates
RelocRecord *Iter = g_records[i].RelocList;
UINT GCCount = (UINT) g_records[i].GCCount;
while (Iter)
{
RelocRecord *innerIter = Iter->next;
while (innerIter)
{
if (Iter->Root == innerIter->Root)
{
ExtOut ("Root %p relocated multiple times in gc %d\n",
(ULONG64) Iter->Root,
GCCount);
bErrorFound = TRUE;
}
innerIter = innerIter->next;
}
Iter = Iter->next;
}
}
}
if (!bErrorFound)
{
ExtOut ("No duplicate promote or relocate messages found in the log.\n");
}
return Status;
}
DECLARE_API(HistRoot)
{
INIT_API();
size_t nArg;
StringHolder rootstr;
CMDValue arg[] =
{
// vptr, type
{&rootstr.data, COSTRING},
};
if (!GetCMDOption(args, NULL, 0, arg, _countof(arg), &nArg))
return Status;
if (nArg != 1)
{
ExtOut ("!Root <valid object pointer>\n");
return Status;
}
size_t Root = (size_t) GetExpression(rootstr.data);
ExtOut ("%8s %" POINTERSIZE "s %" POINTERSIZE "s %9s %20s\n",
"GCCount", "Value", "MT", "Promoted?", "Notes");
ExtOut ("---------------------------------------------------------\n");
bool bBoringPeople = false;
// Just traverse the data structure, printing basic stats
for (UINT i=0; i < g_recordCount; i++)
{
UINT GCCount = (UINT) g_records[i].GCCount;
// Find promotion records...there should only be one.
PromoteRecord *pPtr = g_records[i].PromoteList;
PromoteRecord *pPromoteRec = NULL;
bool bPromotedMoreThanOnce = false;
while(pPtr)
{
if (pPtr->Root == Root)
{
if (pPromoteRec)
{
bPromotedMoreThanOnce = true;
}
else
{
pPromoteRec = pPtr;
}
}
pPtr = pPtr->next;
}
RelocRecord *pReloc = g_records[i].RelocList;
RelocRecord *pRelocRec = NULL;
bool bRelocatedMoreThanOnce = false;
while(pReloc)
{
if (pReloc->Root == Root)
{
if (pRelocRec)
{
bRelocatedMoreThanOnce = true;
}
else
{
pRelocRec = pReloc;
}
}
pReloc = pReloc->next;
}
// Validate the records found for this root.
if (pRelocRec != NULL)
{
bBoringPeople = false;
ExtOut ("%8d %p %p %9s ", GCCount,
(ULONG64) pRelocRec->NewValue,
(ULONG64) pRelocRec->methodTable,
pPromoteRec ? "yes" : "no");
if (pPromoteRec != NULL)
{
// There should be similarities between the promote and reloc record
if (pPromoteRec->Value != pRelocRec->PrevValue ||
pPromoteRec->methodTable != pRelocRec->methodTable)
{
ExtOut ("promote/reloc records in error ");
}
if (bPromotedMoreThanOnce || bRelocatedMoreThanOnce)
{
ExtOut ("Duplicate promote/relocs");
}
}
ExtOut ("\n");
}
else if (pPromoteRec)
{
ExtOut ("Error: There is a promote record for root %p, but no relocation record\n",
(ULONG64) pPromoteRec->Root);
}
else
{
if (!bBoringPeople)
{
ExtOut ("...\n");
bBoringPeople = true;
}
}
}
return Status;
}
DECLARE_API(HistObjFind)
{
INIT_API();
size_t nArg;
StringHolder objstr;
CMDValue arg[] =
{
// vptr, type
{&objstr.data, COSTRING},
};
if (!GetCMDOption(args, NULL, 0, arg, _countof(arg), &nArg))
return Status;
if (nArg != 1)
{
ExtOut ("!ObjSearch <valid object pointer>\n");
return Status;
}
size_t object = (size_t) GetExpression(objstr.data);
ExtOut ("%8s %" POINTERSIZE "s %40s\n",
"GCCount", "Object", "Message");
ExtOut ("---------------------------------------------------------\n");
size_t curAddress = object;
bool bBoringPeople = false;
// Just traverse the data structure, printing basic stats
for (UINT i=0; i < g_recordCount; i++)
{
if (curAddress == 0)
{
break;
}
UINT GCCount = (UINT) g_records[i].GCCount;
PromoteRecord *pPtr = g_records[i].PromoteList;
while(pPtr)
{
if (pPtr->Value == curAddress)
{
bBoringPeople = false;
ExtOut ("%8d %p ", GCCount, (ULONG64) curAddress);
ExtOut ("Promotion for root %p (MT = %p)\n",
(ULONG64) pPtr->Root,
(ULONG64) pPtr->methodTable);
}
pPtr = pPtr->next;
}
RelocRecord *pReloc = g_records[i].RelocList;
while(pReloc)
{
if (pReloc->NewValue == curAddress ||
pReloc->PrevValue == curAddress)
{
bBoringPeople = false;
ExtOut ("%8d %p ", GCCount, (ULONG64) curAddress);
ExtOut ("Relocation %s for root %p\n",
(pReloc->NewValue == curAddress) ? "NEWVALUE" : "PREVVALUE",
(ULONG64) pReloc->Root);
}
pReloc = pReloc->next;
}
if (!bBoringPeople)
{
ExtOut ("...\n");
bBoringPeople = true;
}
}
return Status;
}
DECLARE_API(HistObj)
{
INIT_API();
size_t nArg;
StringHolder objstr;
CMDValue arg[] =
{
// vptr, type
{&objstr.data, COSTRING},
};
if (!GetCMDOption(args, NULL, 0, arg, _countof(arg), &nArg))
return Status;
if (nArg != 1)
{
ExtOut ("!object <valid object pointer>\n");
return Status;
}
size_t object = (size_t) GetExpression(objstr.data);
ExtOut ("%8s %" POINTERSIZE "s %40s\n",
"GCCount", "Object", "Roots");
ExtOut ("---------------------------------------------------------\n");
size_t curAddress = object;
// Just traverse the data structure, printing basic stats
for (UINT i=0; i < g_recordCount; i++)
{
if (curAddress == 0)
{
break;
}
UINT GCCount = (UINT) g_records[i].GCCount;
ExtOut ("%8d %p ", GCCount, (ULONG64) curAddress);
RelocRecord *pReloc = g_records[i].RelocList;
size_t candidateCurAddress = curAddress;
bool bFirstReloc = true;
while(pReloc)
{
if (pReloc->NewValue == curAddress)
{
ExtOut ("%p, ", (ULONG64) pReloc->Root);
if (bFirstReloc)
{
candidateCurAddress = pReloc->PrevValue;
bFirstReloc = false;
}
else if (candidateCurAddress != pReloc->PrevValue)
{
ExtOut ("differing reloc values for this object!\n");
}
}
pReloc = pReloc->next;
}
ExtOut ("\n");
curAddress = candidateCurAddress;
}
return Status;
}
DECLARE_API(HistInit)
{
INIT_API();
GcHistClear();
CLRDATA_ADDRESS stressLogAddr = 0;
if (g_sos->GetStressLogAddress(&stressLogAddr) != S_OK)
{
ExtOut("Unable to find stress log via DAC\n");
return E_FAIL;
}
ExtOut ("Attempting to read Stress log\n");
Status = StressLog::Dump(stressLogAddr, NULL, g_ExtData);
if (Status == S_OK)
ExtOut("SUCCESS: GCHist structures initialized\n");
else if (Status == S_FALSE)
ExtOut("No Stress log in the image, GCHist commands unavailable\n");
else
ExtOut("FAILURE: Stress log unreadable\n");
return Status;
}
DECLARE_API(HistClear)
{
INIT_API();
GcHistClear();
ExtOut("Completed successfully.\n");
return Status;
}
|